Automatic circuit



H. BA KISSINGER.

AUTOMATIC cmcul BREAKER.

APPLICATION FILED NOV. 27.1920.

Patented Aug. 8, 1922.

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UNITED STATES PTENT OFFICE.

HERBERT B. KISSINGER, or Loox HAVEN, PENNSYLVANIA.

AUTOMATIC CIRCUIT .BREAER tain new. and `useful.'Improvements in an AutomaticA Circuit Breaker, loff 'vvhichi the following is aspecfificatiom u Y .The resent linvention relatesto 'an automatic *circuit breaker, and; has forfitsobject to provide a device of characte'r'which embodies fnovel,featuresi .coiis'truction lvvhereby it. can; =be ,substitutiedforfthe o'rdimi' i Edison.' fuse P111. vliih must-,b .replaced when blown, an'whichxcainbegused v nnection .yvith the 'fordinaryj'r-lildiso 1n baise. 2'.; Il -;"-";"-',1 A. urther.. .theinventi'on is to generally improve upon circuit .breakers of this character by providing a, device Which will be of extremely.simple, durable `and inexpensive construction, one which is eicient and reliable in operation, and well adapted to the purpose for which it is designed.

With these and numerous other objects in View, this invention resides in certain novel features of construction, and the combination and arrangement of parts as will be hereinafter fully described and claimed.

In the drawing Figure 1 is a longitudinal sectional view through a circuit breaker constructed in accordanoe with the invention, and

Figure 2 is a section taken on the line 2 2 of Figure 1 looking downwardly.

Specifically describing the present ernbodiment of the invention, the numeral 1 desi ates the base or body of the circuit brealir which may be formed of any suitable insulatin material. The end of the base is conica in sha. e as is usual in the ordinary fuse plug. threaded sleeve 2 is fitted on the base 1 forming one of the con tact members and beingr adapted to be screwed into an Edison base in the usual manner. A cylinder 3 is mounted on the annular flange 4 of the base 1 and is fixed thereto by mea-ns of bolts 5. A screw threaded plug 6 is mounted in the bottom of the base 1 and forms one of the contact members with the Edison base. This base 1 is of hollow construction and the contact spring 7 is suitably mounted on the plug 6 so as to be within the interior of the base 1. This contact spring 7 is of substantial U-shape and the legs thereof are curved so that their Specification of Letters Patent.l Application lediovember 27,1v20- M Patented aug. e, 1922. salinit.. 426,'s6i. i i

lower.; h alyes 'ivillmconverge toward each otheryvhille theirviupperhalves diverge from eachother.y Q 'i Y 4 1jr-Alcor? 58 the plate 9' formed on 4its enczlwliichE is ,situated on top ofV the base lissurrounded byE a solenoid 10 having usual vviiding 11'l` .thereabout. .l ,The size and .a'incunt of; wirevvh'ich yWillbe used for thevv'indingivvillhbe determined by the voltagefland amperage. cover-121s mounted Quvtli'e: oylludgrlandheld in placeby means pflthehol s@ and, is, provided- `with a central erfitlilathfeughvhwh -issldably mounted ille-Planeet .l3- This; plunger 13 extends the: cpre 8 .down into vthe ilgiglptgpdisprovide .at its=,l,ower,end with axcpatagimqb 144 which is provided with annular groove intermediate its ends so that Yit"may; li`f5 engaged by the contact spring 7 as,i-:lfiovv:n nin.ll`igure 1.y VA coil spring l5 is clisposed-1 around: the.V plunger 13 within the insulating core 8 and has one end attached to the cover 12 while the other end is suitably attached to the plunger 13 and this spring will normally have a tendency to draw the plunger upwardly or out of the base 1.

The circuit between the sleeve 2 and the plug 6 is completed through one of the bolts 5, rod 16, winding 11, rod 17, plun er 13, contact knob 14, and contact spring An armature 18 is provided with a central opening through which extends the plunger 13 and this armature 18 is normally held out of engagement with the solenoid 10 by means of eaf springs 19 which are attached thereto and have their outer ends fixed between the plate 9 and the top of the base 1. A stop 20 is fixed on the plunger rod 13 and will be enoraged by the armature 18 so that when same is attracted by the solenoid 10 the plunger 13 will be moved so as to break the contact betiveen the contact knob 14 and the Contact spring 7.

When it is desired to again close the circuit, the operator merely pushes inwardly upon the plunger 13 until the latter has been forced into operative position and the contact spring 7 grasps the contact knob 14 by having the middle of its arms situated Within the groove provided therein.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the circuit breaker will be readily understood without a more extended explanation. As

numerous changes in form, proportion, and in the minor details of construction, maybe resorted to without departing from the spirit of. this invention, I do not wish to be limited to the construction herein Shown and described other than as claimed.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is 1v. An automatic circuit breaker including a base, a pair of Contact elements on the base, a spring actuated plunger adapted to engage the contact elements to close a circuit, a so1e noid surrounding lthe plunger, the winding of said solenoid' being in circuit with the plunger through one ofthe contact elements, acoilv sprin surrounding the plunger for normally lho dingthe same out' of contact withfthe other contact element, a contact lmobforinedfonvthe `innerl end ofthe plunger and4 havin an annular groove therein, a contact spring situated on the last mentioned contact' element, said` spring being substantia'll;r U-shaped and having its arms curved sol that their mid' portions will be closer to each other than their other portions wherebythe midi portions may fit in the .roove of the contact knob for normally ho ding the same in engagement with the contact spring, an armature for the solenoid', a spring resisting actuation of the armature by the solenoid, and means for moving the plunger upon movement; of the armature by the solenoid'.

2. An automatic circuit breaker including a hollow base, a Contact plug secured in the lower portion of the base a contact sleeve surrounding the base', said sleeve provided with an annular ange upon its upper end, a cover for the base, a solenoid situated Within the base, an armaturefor thesolenoid, a pair of leaf springs having one end fixed to the base andV their other ends fixed to the armature: for l resistin factuation of lthe armature'by the solenoid., a spring. actuated pl'unger adapted to engage the contact plug', said plun er extending through the armature" and t rough the solenoid meansfelectrcally connecting the winding of the solenoid with the Contact sleeve, means for` electrica'llyfconnectng theiindng ofthe solenoid withtheplunger,` a'n'd means for. actuating tlielplunger upon movements of 'the armalture' by thesolenoid f l A i In testimon whereof I affix my'signature in presence o two witnesses.

' vHEBRBER'I- B. KISSINGER.

Witnesses:

WILSON KISSINGER,

HELEN F. KISSINGEB. 

